Controlled residential ventilation - yes or no

Hi,

I can only agree with Perlenmann. The economic benefit is questionable, but the comfort is great. For example, kitchen odors. A quarter of an hour at the highest setting and the smells are almost gone, as well as the steam after showering/bathing.
Another advantage: on the muggy days recently, I set the ventilation to exhaust mode (we are not allergy sufferers), tilted the windows in the children's rooms and bedrooms, and the cool night air was gently brought inside. An inexpensive little air conditioner that will definitely work well with the cooling function of the brine heat pump in a proper summer (we haven't tested that yet - this will be our first summer in the new house).
Conclusion: Controlled residential ventilation/heat recovery should, in my opinion, be part of a new building.

Regards...

Hello,
that sounds good

Since my architect has not contacted me yet, I am currently looking for systems myself. In doing so, I also came across the decentralized Controlled Residential Ventilation. If my architect cannot or will not offer us a cheaper alternative to the central Controlled Residential Ventilation, that would also not be a bad alternative at first glance. We'll see how it goes.
After all the positive experiences here, of course, I would also like to have one. I am also plagued by birch pollen
Best regards
sevenofnine

The ventilation system for €12,000 is still acceptable depending on the device:
- €2,000 plate heat exchanger/old €4,000 rotary heat exchanger
- €2,000 ground collector intake
- €2,500-€4,500 pipe material/valves/silencer
plus 40% installation costs

Ventilation is a health aspect, not an economic one! So monetarily, it will not really pay off, except with a ventilation heating system, where you can recoup €25,000 by foregoing the ground-source heat pump heating system with underfloor heating.
But then you need a passive house; otherwise, the ventilation heating alone will not suffice. I would also recommend it instead of the expensive ground-source heat pump and underfloor heating. That is significantly more worthwhile...